This is the story of how Mr. Hubbard discovered the reactive mind and developed the procedures to get rid of it. Originally written for a national magazine—published to coincide with the release of Dianetics: The Modern Science of Mental Health—it started a wildfire movement virtually overnight upon that book’s publication. Here then are both the fundamentals of Dianetics as well as the only account of Mr. Hubbard’s two-decade journey of discovery and how he applied a scientific methodology to unravel the mysteries and problems of the human mind. And, hence, the culmination of Man’s 10,000-year search.